Flying
Whenever Savage Ventmaw attacks, add {R}{R}{R}{G}{G}{G}. Until end of turn, you don't lose this mana as steps and phases end.
Related products

from $27.00
Virtue of Persistence // Locthwain Scorn
Wilds of Eldraine
At the beginning of your upkeep, put target creature card from a graveyard onto the battlefield under your control.

$1.00
Shared Animosity - Borderless - Showcase
Wilds of Eldraine: Enchanting Tales
Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.

from $12.00
Grave Pact - Borderless - Showcase
Wilds of Eldraine: Enchanting Tales
Whenever a creature you control dies, each other player sacrifices a creature.